WO2010088618A1 - Appareil pour laver l'argenterie/le couvert ou des pièces et son procédé - Google Patents

Appareil pour laver l'argenterie/le couvert ou des pièces et son procédé Download PDF

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Publication number
WO2010088618A1
WO2010088618A1 PCT/US2010/022763 US2010022763W WO2010088618A1 WO 2010088618 A1 WO2010088618 A1 WO 2010088618A1 US 2010022763 W US2010022763 W US 2010022763W WO 2010088618 A1 WO2010088618 A1 WO 2010088618A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
fluid
washing system
generally
parts washing
Prior art date
Application number
PCT/US2010/022763
Other languages
English (en)
Inventor
John Cantrell
Mark Churchill
Mike Licata
David Gast
Original Assignee
Metcraft, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metcraft, Inc. filed Critical Metcraft, Inc.
Priority to CA2749950A priority Critical patent/CA2749950C/fr
Priority to EP10736535.5A priority patent/EP2391458A4/fr
Priority to AU2010208022A priority patent/AU2010208022B2/en
Priority to CN2010800061293A priority patent/CN102300648A/zh
Publication of WO2010088618A1 publication Critical patent/WO2010088618A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/02—Washing or rinsing machines for crockery or tableware with circulation and agitation of the cleaning liquid in the cleaning chamber containing a stationary basket
    • A47L15/08—Washing or rinsing machines for crockery or tableware with circulation and agitation of the cleaning liquid in the cleaning chamber containing a stationary basket by application of a pressure effect produced by pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0089—Washing or rinsing machines for crockery or tableware of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats, recreational vehicles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
    • B08B3/104—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid using propellers

Definitions

  • the present general inventive concept relates to a washing (or pre-washing) system, and more particularly, to an apparatus and a method of washing (or pre-washing) silverware/flatware, or one or more other objects/parts, utilizing a fluid-push/pull system.
  • Pot and pan washing machines of the type used in restaurants, institutions and other eating facilities often involve a large wash tank or basin in which water (mixed with detergent, generally a cleaning "fluid") is circulated within a wash tank to wash the "wares" (i.e. pots, pans, utensils, flatware/silverware, etc.) to provide a washing action.
  • wares i.e. pots, pans, utensils, flatware/silverware, etc.
  • the machine of the '436 Patent includes a wash tank with multiple jets evenly spaced apart at an elevated position along the rear wall of the wash tank.
  • the tank is filled with water/detergent (fluid) to a level above the position of the jets. Pots and pans and other wares are placed in the wash tank, and a pump is activated to draw fluid from within the wash tank and direct it through the jets to create a jet stream.
  • Each jet directs its jet stream toward the bottom wall of the wash tank, the bottom wall then deflects the jet stream upward and towards the front wall of the tank.
  • the front wall then deflects the upward moving jet stream towards the rear wall of the tank, and the rear wall deflects the jet stream downward and back towards the front wall along the bottom wall.
  • the combination of deflections of the jet stream from the bottom, front and rear walls provides a rolling washing action within the wash tank that results in effective cleaning of all surfaces of the wares being washed.
  • wares such as flatware/silverware is typically spray washed by placing mesh (or porous) racks of flatware/silverware in a machine (typically referred to as a "commercial dishwasher") that sprays water/detergent over the racks of flatware/silverware from one or more jets typically located on rotating wash arms.
  • a machine typically referred to as a "commercial dishwasher”
  • the streams of water/detergent from such jets are ultimately deflected from their original paths by the flatware or even by the racks in which the flatware is located.
  • Even in machines that utilize numerous jets from multiple angles, the deflections and/or nesting of like types of wares i.e.
  • a principal object of the present general inventive concept is to provide a washing system for washing silverware/flatware and other small, irregularly shaped and/or elongated objects/parts (either individually or as a group of objects/parts) that effectively and thoroughly removes debris therefrom.
  • Another object of the present general inventive concept is to provide a washing system that supports silverware/flatware or other objects/parts in an orientation that is conducive to removing debris therefrom and/or sorting the silverware/flatware or other objects/parts as part of the process.
  • Another object of the present general inventive concept is to provide a washing system that has one or more racks to support silverware/flatware or other objects/parts.
  • Another object of the present general inventive concept is to provide a washing system that exposes generally all surfaces of generally all silverware/flatware or other objects/parts to debris removal fluid streams to effectively remove debris therefrom.
  • Another object of the present general inventive concept is to provide a washing system that utilizes a fluid-push/pull (draft or induction system) to forcibly push/pull, channel or funnel fluid through submerged silverware/flatware or one or more other objects/parts thereby substantially neutralizing unwanted fluid deflection that occurs in prior art systems.
  • Still another object of the present general inventive concept is to provide a fluid-push/pull, draft or induction system to forcibly push/pull, channel or funnel fluid through submerged silverware/flatware or one or more other objects/parts in such a way that the fluid has no alternative path but to travel through generally the entire mass of silverware/flatware or one or more other objects/parts.
  • Another object of the present general inventive concept is to provide a washing system that washes silverware/flatware or one or more other objects/parts in such a manner that eliminates or substantially reduces any post-wash treatment, e.g., additional handling or polishing.
  • Another object of the present general inventive concept is to provide a washing system that is a stand-alone unit.
  • Another object of the present general inventive concept is to provide a washing system that is compact.
  • Another object of the present general inventive concept is to provide a standalone washing system that occupies a generally small footprint.
  • Another object of the present general inventive concept is to provide a washing system that drops into a counter-top and/or that is built into a counter-top.
  • Another object of the present general inventive concept is to provide a washing system that is energy efficient.
  • Another object of the present general inventive concept is to provide an efficient method of washing silverware/flatware or one or more other objects/parts that conserves washing fluid, uses water more effectively, and consumes minimal operator time.
  • a washing system that includes a manifolding to direct a flow of fluid (such as water/detergent) through a silverware/flatware (or one or more other objects/parts) containing cavity (or cavities).
  • a pumping system including a propeller, impellor or other suitable pumping method, as well as appropriate manifolding moves the fluid through the pumping system (including appropriate manifolding) to create a substantial flow of fluid through generally the entire cavity (cavities). Fluid is forced through the cavity (cavities) and thus through the mass of flatware/silverware (or one or more other objects/parts) positioned within the cavity (cavities).
  • the fluid essentially is provided no alternative path of travel to circulate through the washing system other than directly through generally the entire mass of flatware/silverware (or one or more other objects/parts) located within the cavity (cavities).
  • the flow of fluid more fully and closely surrounds and travels around the entire surface of each piece of flatware/silverware (or one or more other objects/parts) within the cavity (cavities) which substantially neutralizes the unwanted fluid deflection that occurs in prior art systems.
  • the pumping system generally pushes fluid through said cavity (cavities).
  • one or more openings of the cavity (cavities) are located at the discharge location of the pumping system, and the fluid flow from the discharge of the pumping system is forced through the cavity (cavities) and thus through the object(s) contained therein.
  • the fluid is returned to the pumping system after it has been forced through the object(s) in the cavity (cavities) via one or more openings at the intake location of the pumping system.
  • the cavity (cavities) is generally open at the intake location of the pumping system to provide little to no back pressure, except for gravity which ultimately assists in directing the flow of fluid from the cavity back into the pumping system.
  • a closed fluid circuit is utilized.
  • the pumping system generally pulls fluid through said cavity (cavities).
  • one or more openings of the cavity (cavities) are located at the intake location of the pumping system, and the fluid flow from the intake of the pumping system pulls fluid out of the cavity (cavities) and thus through the object(s) contained therein. The fluid is returned to the pumping system after it has been forced through the object(s) in the cavity (cavities) via one or more openings at the discharge location of the pumping system.
  • the cavity (cavities) is generally open at the discharge location of the pumping system to provide little to no back pressure, except for gravity which ultimately assists in directing the flow of fluid from the pumping system back into the cavity (cavities).
  • a closed fluid circuit is utilized.
  • the flow of fluid from the pumping system discharge is allowed to change velocity and/or direction through the use of gravity prior to its return through the pumping system.
  • the pumping system intake (draw) is not the only influence in the direction and/or velocity in which the fluid flows from the pumping system discharge through the cavity (cavities) and/or the manifolding.
  • the design of the structure of the cavity (cavities) and/or the manifolding significantly alters at least a portion of the flow direction and/or velocity of fluid through the cavity (cavities).
  • the pumping system is capable of operation in both forward and reverse directions, such that the pumping system may alternatively be operated in a first direction to push fluid into the opening(s) of the cavity (cavities), in a second direction to pull fluid down through the opening(s) of the cavity (cavities).
  • a control system of the pumping system automatically oscillates the pumping system between forward and reverse directions during a wash cycle (i.e. 10 minutes forward and then 10 minutes reverse or 10 minutes forward, 10 minutes off, 10 minutes reverse, etc.).
  • a control system of the pumping system pulses operation of the pumping system to pulsate the flow of fluid through the cavity (cavities) of the washing system of the inventive concept.
  • the pumping system may be pulsed to operate in the forward direction for 1 minute and then turned off for one minute (or forward 1 minute, off 1 minute, reverse 1 minute, etc.).
  • the manifolding is created at least in part by the housing of the washing system.
  • a wall (or walls) of the cavity (cavities) forms at least a part of the manifolding.
  • the cavity (cavities) wall (or walls) includes openings (perforations, holes, slots, vents, etc.) to allow fluid to flow between the cavity (cavities) and the pumping system.
  • one or more wall openings are located toward the top of the cavity (cavities) to result in a generally vertical fluid path through the cavity (cavities) during operation of the inventive system.
  • the wall opening(s) are also located toward the lower half of the cavity (cavities) to result in an at least a partially horizontal fluid path through the cavity (cavities) during operation of the inventive system (i.e. the draw of the pumping system will alter a portion of the fluid path from vertical to horizontal, or from horizontal to vertical, depending upon the direction of operation of the pumping system). This aids in eliminating "dead zones" (areas of stagnant washing fluid) within the cavity.
  • the density of the wall opening(s) located toward the lower half of the cavity (cavities) is lower than the density of the wall opening(s) located toward the upper half of the cavity (cavities), such that the fluid path through the cavity (cavities) is substantially vertical.
  • the intake/discharge opening(s) in the cavity (cavities), the structure of the cavity (cavities), and/or the structure of the pumping system are configured to provide a generally even flow of fluid across substantially an entire cross section of the cavity (cavities), where fluid is present, and preferably through generally the entire volume, of the cavity (cavities).
  • the cavity (cavities) includes tubes, vanes or baffles extending toward, into or through the opening(s) from the cavity (cavities) toward the pumping system intake (when the pumping system is pulling fluid through the cavity) or discharge (when the pumping system is pushing fluid through the cavity) to help direct the flow of fluid from and/or into the cavity (cavities).
  • the tubes, vanes or baffles are part of an intake/discharge plate that is located at the pumping system intake location of the cavity (cavities) when the pumping system is pulling fluid through the cavity (cavities), or at the pumping system discharge location when the pumping system is pushing fluid through the cavity (cavities), between the intake/discharge (when pulling/pushing respectively) opening(s) and the pumping system.
  • the intake/discharge opening(s) of the cavity (cavities) and the diameter of the intake/discharge of the pumping system generally spans across the entire end of the cavity (cavities) to create the generally even flow of fluid through the cavity.
  • FIG. 1 is a top perspective view of a silverware/flatware washing system of an embodiment of the present general inventive concept.
  • Fig. 2 is a front elevation sectional view of the silverware/flatware washing system of Fig. 1 taken along line A-A.
  • Fig. 3 is a side perspective sectional view of the silverware/flatware washing system of Fig. 1 taken along line A-A.
  • Fig. 4 is a top plan view of the silverware/flatware washing system of Fig. 1.
  • Fig. 5 is a front elevation sectional view of a silverware/flatware washing system of another embodiment of the present general inventive concept similar to that of Fig. 1.
  • Fig. 6 is a front elevation sectional view of a silverware/flatware washing system of still another embodiment of the present general inventive concept.
  • Fig. 7 is a top plan view of the silverware/flatware washing system of Fig. 6.
  • Fig. 8 is a bottom perspective view of a removable silverware cavity of the silverware/flatware washing system of Fig. 6.
  • FIG. 9 is a top perspective view of a silverware/flatware washing system of yet another embodiment of the present general inventive concept.
  • Fig. 10 is a top plan view of the silverware/flatware washing system of Fig. 9.
  • Fig. 1 1 is a front elevation sectional view of the silverware/flatware washing system of Fig. 10 taken along line A-A.
  • Fig. 12 is a detailed view of area B shown in Fig. 11.
  • Fig. 13 is an front elevation exploded view of another embodiment of a silverware/flatware washing system of the present general inventive concept similar to that of Fig. 9. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • a first embodiment of the present general inventive concept features a silverware/flatware washing system 1 having a generally cylindrical housing 5 with inwardly curved upper and lower portions 6 and 7 that act as a manifolding to respectively direct a flow of fluid to and from an impeller 9 and through a cavity 10 for holding silverware/flatware or other items.
  • impeller 9 shown in the embodiment of Figs.
  • centrifugal-type impeller is a centrifugal-type impeller, it will be appreciated that a centrifugal-type pumping system, a propeller-type pumping system, or any other type of pumping system now known or hereafter developed that is suitable for moving a large volume of fluid may be utilized in any of the embodiments disclosed herein without departing from the spirit and scope of the instant invention.
  • the housing 5 is filled with fluid (water, a water/detergent mixture, or other suitable fluid), preferably to a level near or above the top of the silverware cavity 10.
  • fluid water, a water/detergent mixture, or other suitable fluid
  • a vacuum is created that pulls fluid into impeller 9.
  • a stream of fluid is then ejected, pushed, or otherwise diverted from the impeller 9 in a lateral direction and to the lower portion 7.
  • the wall of lower portion 7 changes/redirects the direction of the fluid ninety degrees (90°) toward an upward direction as the fluid flows along an interior, generally straight wall 8 of the housing 5.
  • the straight wall 8 connects to the upper portion 6 of the housing 5.
  • the direction of the stream of fluid is redirected by the upper portion 6 of the housing and/or by gravity toward the center of the housing 5 and downward through silverware cavity 10.
  • the path of the stream of fluid is redirected by upper portion 6 of housing 5 at an angle of approximately 120°.
  • the angles at which the stream of fluid may be redirected at any particular point within housing 5 may vary considerably without departing from the spirit and scope of the instant invention and that alternative manifold structures will be apparent to those of ordinary skill in the art.
  • the downwardly-directed fluid enters the silverware/flatware cavity 10, which in a preferred embodiment includes one or more silverware/flatware support racks 12 (shown in Fig. 5) for supporting silverware/flatware 30.
  • the silverware/flatware cavity 10 includes a bottom surface 13, side surfaces 14, and an open top 15. The open top results in little to no back pressure, except for gravity which assists in directing the flow of fluid into cavity 10.
  • Bottom surface 13 includes opening 20 to provide an intake port between silverware/flatware cavity 10 and interior 70 of impeller 9.
  • a perforated screen is located over opening 20 to prevent items from being pulled into impeller 9 during operation.
  • opening 20 comprises multiple small apertures/perforations through surface 13, such that surface 13 itself acts as a screen to prevent items from being pulled into impeller 9 while at the same time allowing fluid to be drawn into impeller 9 through the apertures.
  • the dimensions and shape of opening 20, as well as the size of impeller 9, may vary significantly in alternative embodiments depending upon the desired flow characteristics. In the embodiment shown in Figs. 1-5, the diameter of the intake (opening 20) of cavity 10 is considerably smaller than the diameter of cavity 10 itself.
  • various embodiments may include tubes, vanes or baffles extending toward, into or through opening 20 of cavity 10 and toward impeller 9 to help direct the flow of fluid from cavity 10 to impeller 9.
  • the tubes, vanes or baffles are part of a plate that is located at opening 20 (either partially or totally within cavity 10 or partially or totally within the manifolding, or partially within cavity 10 and partially within the manifolding).
  • the opening 20 generally extends across the entire area of bottom surface 13, such that a generally even flow is created through the entire volume of silverware/flatware cavity 10.
  • the shape or other design elements of the manifolding help to direct the flow of fluid from cavity 10 to impeller 9.
  • cavity 10 allows for the use of conventional silverware/flatware support racks 12 within cavity 10.
  • shape of cavity 10 used in connection with any of the embodiments discussed herein may be altered without departing from the spirit and scope of the instant invention.
  • the cross-sectional shape of cavity 10 in the embodiment shown in Figs. 1-5 may be rectangular, circular, triangular, or any other shape desired rather than the square shape shown.
  • the upper edges 35 of side surfaces 14 are beveled upward and outward toward a separate internal side wall 14a of housing 5.
  • the internal side wall 14a creates a generally cylindrical manifolding cavity with wall 8.
  • the generally cylindrical shape of the manifolding cavity allows for a generally laminar flow of fluid from impeller 9 and into silverware/flatware cavity 10. Notwithstanding, it will be appreciated that alternative shapes may be utilized without departing from the spirit and scope of the instant invention. Moreover, it will be appreciated that internal side wall 14a may be eliminated entirely without departing from the spirit and scope of the instant invention.
  • Silverware/flatware cavity 10 is supported within housing 5 by web sections 37 which span from wall 8 of housing 5 to wall 14 of the silverware/flatware cavity 10.
  • web sections 37 span from wall 8 of housing 5 to wall 14 of the silverware/flatware cavity 10.
  • Web sections 37 include openings 21 to allow fluid to flow freely within the entire volume of the manifolding created by cavity 10 and housing 5.
  • an alternative embodiment may utilize two (2) web sections rather than four, and the size and shape of openings 21 may be altered significantly from that shown in Figs. 1-5.
  • the support rack 12 may be a single rack, or a plurality of racks, of which one, some, or all may or may not be removable from the silverware/flatware cavity 10. In a preferred embodiment all support rack(s) are removable from cavity 10.
  • the support rack 12 includes one or more internal walls bridging the side surface 14 of silverware cavity 10, sized and shaped to maintain a desired orientation of the silverware/flatware 30. For instance, the silverware/flatware 30 may be positioned standing up, laying down, angled, and/or stacked or piled on top of each other depending upon the structural design of the support rack and/or cavity 10. In the embodiment shown in Fig. 5, multiple support racks 12 are stacked or stackable on top of one another. In an alternative embodiment, multiple support racks (compartments, or cavities) are oriented along side each other (i.e. side by side instead of on top of one another).
  • the impeller 9 both pulls fluid from opening 20 of cavity 10 and discharges fluid into open top 15 of silverware/flatware cavity 10, creating a generally even flow of fluid through the entire volume of the silverware/flatware cavity 10.
  • This generally high volume of fluid forces the fluid to flow through silverware/flatware cavity 10 more fully such that the flow of fluid more closely surrounds the entire surface of each piece of flatware/silverware 30 within the silverware/flatware cavity 10.
  • the flow of fluid through cavity 10 essentially has no alternative path but to travel through generally the entire mass of silverware/flatware within cavity 10.
  • the housing 5 may be disassembled for easy cleaning.
  • the housing may be disassembled into three sections, i.e., the upper portion 6 may be removed at the internal straight wall 8, which can also be removed at the lower portion 7.
  • the upper portion 6, internal straight wall 8, and lower portion 7 may be securely coupled using latches (not illustrated), screwed together with corresponding inner and outer threaded surface, or other like engagement means.
  • fluid i.e. water and/or soap, etc.
  • fluid i.e. water and/or soap, etc.
  • water and/or soap/detergent
  • a drain is located along bottom surface 50, to allow fluid (water, soap, etc.) to be quickly and easily removed from the system.
  • system 1 is filled to a level of fluid above the top of upper beveled edges 35 such that the fluid fills the silverware/flatware cavity as well as the manifolding created by the housing 5.
  • an overflow drain is included above the preferred fluid level to prevent overflow of system 1 caused for example by increased volume due to soap foam or the like.
  • the system 1 of the instant invention is a stand-alone unit that may be located in any convenient location in kitchen or restaurant. As is shown in Fig. 5, such an embodiment includes legs 62 extending from housing 5 and wheels 64 to allow the unit to be easily moved.
  • the system 1 of the instant invention may be mounted within (or dropped into) a countertop or table.
  • housing 5 includes annular lip 66 that allows system 1 to be dropped into a cutout in the countertop/table in the same or similar manner in which a sink/basin would be installed.
  • Cavity 10 is a bucket-type container that includes handle 1 15 for removing cavity 10 from housing 5, and includes generally perforated bottom 117 to allow fluid to flow into and/or out of the bottom of cavity 10 while at the same time maintaining silverware/flatware within cavity 10.
  • Web sections 37 extend from the inner surfaces of housing 5 toward its center. Web sections 37 are connected to perforated intake member 1 10 which covers propeller 9, and to perforated upper support member 120. Intake member 110 acts as a shelf on which cavity 10 is positioned during operation of system 1.
  • Upper support member 120 provides support for web sections 37 and also acts as a guide for positioning cavity 10 properly within housing 5.
  • the perforated surface of upper support member 120 allows fluid to flow through as system 1 operates.
  • Upper support member 120 includes grip member 125 for easy removal of support member 120 for cleaning.
  • Housing 5 shown in Figs. 6 through 8 is generally octagonal in shape for ease of manufacturing. Nevertheless, it will be appreciated that any shape of housing may be utilized in this embodiment (or in any other embodiment) without departing from the spirit and scope of the instant invention. Furthermore, it will be appreciated that alternative housing and component structures, such as double-skinned or insulated walls, may be utilized without departing from the spirit and scope of the instant invention.
  • cavity 10 is filled with silverware/flatware and is positioned within housing 5 onto intake member 1 10.
  • numerous pieces of silverware/flatware are randomly pilled on top of one another into a mass within cavity 10.
  • support racks similar to those discussed above with respect to the embodiment shown in Figs. 1-5 may also be utilized.
  • Cavity 10 and/or housing 5 is filled with fluid (note that housing 5 may be filed while cavity 10 is removed, or while cavity 10 is located within housing 5) to a level preferably above the mass of silverware/flatware (i.e. the mass of silverware is completely submerged) and that is preferably above upper support member 120.
  • Motor 60 is activated to drive propeller 9 to cause the flow of fluid through cavity 10.
  • the direction of motor 60 is capable of being reversed to alternately drive propeller 9 in either a forward or reverse direction.
  • propeller 9 will create a suction that pulls fluid downward through intake member 110.
  • propeller 9 will push water upward through intake member 1 10 (making intake member 110 actually a discharge).
  • housing 5 and the outer wall of cavity 10 act as a manifolding to circulate fluid that is drawn by propeller 9.
  • the diameter of propeller 9 and intake member 1 10 are equal to the diameter of, or generally span across the entire perforated bottom 117 of cavity 10. This creates a generally even flow of fluid through the entire volume of cavity 10.
  • the pumping system must be powerful enough to create a column of fluid that can blast through the entire flood plane created within filled cavity 10.
  • the specific design parameters needed to enable the pumping system including, but not necessarily limited to the size of motor 60 and the size, shape, etc. of propeller 9) to create a desired flow of fluid through the entire volume of cavity 10, and through the mass of silverware/flatware loaded within cavity 10, will vary depending upon factors such as the size and shape of cavity 10, as well as desired load capability for cavity 10, and will be readily apparent to a person of ordinary skill in the art.
  • FIGs. 9 through 13 two similar variations of other embodiments of a silverware/flatware washing system is shown.
  • the silverware/flatware washing system of Figs. 9 through 12 is particularly well-suited for pulling cleaning fluid (water/detergent, etc.) downward through cavity 10 from/by propeller 9, while the system of Fig. 13 is particularly well-suited for pushing cleaning fluid upward through cavity 10.
  • the structure of Figs. 9 through 12 may also be utilized in connection with a system in which fluid is pushed upward through cavity 10, and/or in connection with a system in which the direction of fluid flow is oscillated between forward and reverse directions (i.e.
  • Fig. 13 may also be utilized in connection with a system in which fluid is pulled downward through cavity 10, and/or in connection with a system in which the direction of fluid flow is oscillated between forward and reverse directions (i.e. 10 minutes forward, then 10 minutes reverse, etc.) during a wash cycle to both push and pull fluid through cavity 10 by propeller 9. It will also be appreciated that although the structures of the embodiments described in connection with Figs.
  • 1 through 8 are particularly well-suited for pulling fluid downward through cavity 10 by impeller/propeller 9, those structures may be utilized in connection with a system in which fluid is pushed upward through cavity 10, and/or in connection with a system in which the direction of fluid is oscillated between forward and reverse directions to both push and pull fluid through cavity 10.
  • cavity 10 is removably positioned within housing 5 of washing system 1.
  • Cavity 10 includes handles 215 for easy removal and reinsertion of cavity 10 within housing 5. This allows cavity 10 to be loaded with silverware/flatware prior to insertion into housing 5 of washing system 1.
  • Cavity 10 includes perforations 243 and 245 located toward the upper and lower portions of the walls of cavity 10 respectively (discussed in further detail below). This creates two wash actions, in a situation in which the system is operating in an upward direction (i.e.
  • a first action is to push fluid up through the silverware/flatware, as the fluid approaches the top of cavity 10 gravity reduces the upward velocity of the fluid and ultimately causes the fluid path to change from an upward to a downward direction and then the fluid ultimately is pulled through the perforations (243) located toward the top of cavity 10 to return to propeller 9 through the manifolding that is created by housing 5 and cavity 10; and 2) the second action is to pull fluid horizontally toward the side of cavity 10 through the perforations (245) located toward the lower end of cavity 10 (i.e. the velocity and/or direction of the flow of fluid is altered from generally vertical as it is discharged from the propeller 9, to generally horizontal), then through the manifolding to return to propeller 9.
  • a first action is to pull fluid downward through cavity 10 and through the silverware/flatware, the fluid is then directed back upward through the manifolding and toward the top of cavity 10; and 2) the second action is to pull fluid horizontally from the manifolding toward the center of cavity 10 through the perforations (245).
  • the second, horizontal action helps to eliminate or minimize any "dead zones" within cavity 10, resulting generally in a flow of fluid through the entire volume of cavity 10.
  • cavity 10 includes a generally square or rectangular bottom.
  • the square/rectangular bottom works well for loading a mass of silverware/flatware into cavity 10, due to the generally long and narrow shapes and sizes of those items.
  • This shape allows generally the entire volume of cavity 10 to be filled with silverware/flatware laying down flat in cavity 10.
  • a rounded shape similar to that shown in Figs. 6 through 8, the silverware/flatware will tend to create a chord across the circular shape, and less items will be located outside the chord region than toward the center of the circle.
  • the opening at the bottom of cavity 10 is round in shape to mate with the shape of the rotational path of propeller 9, which pulls (or pushes) a generally circular column of fluid upward through cavity 10.
  • perforations are located along the bottom corners of cavity 10 to push or draw fluid through the dead zones 240 in a generally vertical manner. The vertical draw is created by the draw force of propeller 9 of the pumping system when the system is operating in an upward manner (i.e. fluid is being pushed upward through cavity 10 by propeller 9).
  • the vertical pushing force is created by the discharge of propeller 9 as it is directed upward by the manifolding of housing 5 when the system is operating in a downward manner (i.e. the fluid is being pulled downward through cavity 10 by propeller 9).
  • perforations 245 are included at the lower corners of cavity 10 to draw fluid through the dead zones 240 in a generally horizontal manner. This horizontal draw is created by the draw force of propeller 9 of the pumping system when the system is operating in both an upward and a downward manner.
  • perforations 243 are located generally evenly throughout the entire upper portion of the walls of cavity 10; while the lower portion of the walls includes perforations 245 only at the corners of cavity 10 and otherwise includes solid wall portions 247 away from the corners.
  • this design allows for some horizontal linear flow through cavity 10 at the corners of cavity 10, while at the same time allowing for generally vertical linear flow through the majority of the volume of cavity 10. It will be appreciated that the perforation pattern of cavity 10 may be modified to optimize the desired flow path of fluid through cavity 10.
  • cavity 10 has a generally tapered shape from top to bottom in which the top is generally wider in diameter than the bottom of cavity 10.
  • the top of cavity 10 further includes an annular lip that surrounds housing 5 such that when cavity 10 is placed within housing 5 and the lip holds cavity 10 securely within housing 5.
  • Cavity 10 is further supported within housing by shroud subassembly 250, on which the bottom of cavity 10 is placed and rests when cavity 10 is located within housing 5.
  • shroud subassembly 250 on which the bottom of cavity 10 is placed and rests when cavity 10 is located within housing 5.
  • the tapered shape of cavity 10, compared to the generally vertical walls of housing 5 create an open space or manifolding between the walls of cavity 10 and housing 5.
  • FIG. 13 an exploded view of the components to system 1 is shown. It will be appreciated that although similar components may be used in both the embodiment shown in Figs. 9 through 12 and that shown in Fig. 13, various differences in individual components may be desirable, particularly due to the fact that the embodiment of Figs. 9-12 is particularly well- suited for pulling cleaning fluid (water/detergent, etc.) downward through cavity 10 from/by propeller 9, while the system of Fig. 13 is particularly well-suited for pushing cleaning fluid upward through cavity 10. For example, the orientation of propeller 9 is upside down in Figs. 9- 12 when compared to that of Fig. 13 to provide better flow in the preferred pulling direction.
  • cleaning fluid water/detergent, etc.
  • Figs. 9-12 includes a number of vertical panels arranged in a radial pattern directly below propeller 9 to assist the flow of fluid as it is discharged from propeller 9.
  • the vertical panels aid in converting rotational energy from the propeller into a more linear flow of the fluid.
  • cavity 10 fits within housing 5 with the annular lip of cavity 10 surrounding the outer edge of the opening of housing 5 to support cavity 10 in position within housing 5. Cavity 10 further is supported in position within housing 5 by sitting on top of shroud subassembly 250, which surrounds propeller 9. Shroud subassembly 250 aids in restricting the flow path generated by propeller 9 through a generally solid-walled section that surrounds propeller.
  • Fluid either enters (in a system in which propeller 9 pushes fluid upward into cavity 10) or is discharged from (in a system in which propeller 9 pulls fluid downward through cavity 10) shroud subassembly 250 through slots, holes or other openings located in shroud subassembly 250 generally below propeller 9.
  • Propeller 9 is mounted to the shaft of motor 60 using cap screw 261 , self sealing washers 262, impeller cap 263 and cap seal 264.
  • the assembly for mounting propeller 9 to the shaft of motor 60 further includes quad ring 265, shaft extension 266, o-ring 267, pump shaft sleeve 268, rotating seal 269, cap screw 271 , seal housing 272, fixed seal 273, quad ring 274, and cap screw 275.
  • Motor 60 is mounted below housing 5 with the shaft extending into housing 5.
  • Motor 60 is mounted to housing 5 using motor plate 276 and motor plate gasket 277 within housing 5; cap screw 275 and cap screws/hex bolts 278 and lock washers 279 are located below housing 5 to hold motor plate 276 in position.
  • Pin 294 is located within a fluid drainage passageway into motor plate 276. Pin 294 closes off a horizontal portion of the passageway to direct fluid only through a vertical portion of passageway and out through tubing 292. This allows for drainage of any fluid that may push through the seals. Referring to Fig. 12, the mounting assembly of motor 60 (which is essentially the same for both the embodiment shown in Figs. 9 through 1 1 and the embodiment shown in Fig. 13) is shown in further detail.
  • motor 60 is mounted to housing 5 through the use of hex bolts 278 which extend through helical spring lock washers 279 below housing 5, through the bottom of housing 5, further through motor plate gasket 277 and into motor plate 276 located within housing 5.
  • Housing 5 is supported by a leg assembly and caster wheels which allow system 1 to be a self-standing unit.
  • a drain is located at the bottom of housing 5 to allow fluid to be drained from system 1.
  • the drain is connected to drain tubing that includes a ball valve (or other suitable valve) for opening and closing the drain as desired.
  • cavity 10 of either the embodiment shown in Figs. 9 through 12 or that of Fig. 13 is filled with silverware/flatware and placed within housing 5 which is filled with wash fluid.
  • the level of wash fluid is preferably above the level of the mass of silverware/flatware located within the cavity.
  • the pumping system must be powerful enough to create a column of fluid that can blast through the entire flood plane created within filled cavity 10.
  • a pumping system capable of pumping roughly 9000 gallons of fluid per minute is utilized to create approximately a ten inch diameter by 10 inch high column of moving fluid within cavity 10.
  • either higher or lower capacity pumping systems may be utilized, depending upon the desired cleaning action, flow characteristics, load capacity, and other design considerations.
  • the entire volume of cavity 10 is continuously exchanging fluid as fluid flows through the pumping system and back through cavity 10.
  • the column of fluid or flow of fluid through cavity 10 includes a cross section area that is at least equal to, and preferably greater than the cross-section area of the items being washed within cavity 10. Thus, the entire area of the items are exposed to the flow of fluid through cavity 10.
  • the primary components of system 1 described herein are all manufactured of stainless steel for durability and to prevent rusting. Nevertheless, it will be appreciated that any suitable materials for the various components may be utilized without departing from the spirit and scope of the instant invention.
  • cavity 10 of the instant invention can actually consist of multiple individual cavities or compartments within a single housing. Such cavities or compartments may be arranged horizontally (i.e. stacked on top of one another) or vertically (i.e. located side by side of one another), or in any other arrangement desired. It will be appreciated that the singular term "cavity" as used herein and particularly as used in the appended claims, is intended to refer to one or more cavities or compartments.
  • motor 60 is a 110 volt motor providing increased flexibility over larger motors.
  • other components such as a water heater, may be included in system 1 without departing from the spirit and scope of the instant invention. Nevertheless, for energy efficiency purposes, one preferred embodiment of system 1 specifically excludes a water heater, such that the only energy requirement comes from motor 60.
  • certain terms have been used for brevity, clearness and understanding; but no unnecessary limitations are to be implied therefrom beyond the requirements of the prior art, because such terms are used for descriptive purposes and are intended to be broadly construed.
  • the description and illustration of the inventions is by way of example, and the scope of the inventions is not limited to the exact details shown or described.
  • the present invention may be utilized as a "clean out of place" machine for cleaning one or more objects/parts that are removed from other machines (i.e. cleaning parts of milk shake machines, ovens, and other machines) and placed in a parts cleaner of the instant invention.
  • system 1 described above may be utilized as a "clean out of place" machine for one or more larger parts by removing any support racks that may be located in cavity 10.
  • the present invention may be utilized to clean automotive parts.
  • system 1 will include a lid over the top of cavity 10 to prevent the harsher cleaning solvent/fluid from splashing out and possibly injuring an operator.
  • a safety switch is operatively connected with the lid to prevent operation when the lid is open. This helps to prevent user exposure to more caustic cleaning fluids that may be associated with such applications. Nevertheless, it will be appreciated that such structural components may be utilized in connection with less caustic applications as well, if desired.
  • the instant invention may be utilized as a pre- cleaning system, in which silverware/flatware is cleaned to remove soil, and then run through one or more additional wash, rinse or sanitizing systems/processes.
  • washing is intended to include any cleaning, washing, pre-washing, pre-cleaning, rinsing, sanitizing, disinfecting, sterilizing or other similar debris, germ or other foreign matter removal processes or activities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un appareil et un procédé permettant de laver (ou de prélaver) l'argenterie/le couvert ou un ou plusieurs autres objets/pièces. L'appareil et le procédé utilisent un système et un procédé de poussée/traction de fluide dans lesquels en général tout un volume de fluide est poussé ou tiré à travers une cavité dans laquelle se trouve l'argenterie/le couvert ou d'autres objets/pièces.
PCT/US2010/022763 2009-01-30 2010-02-01 Appareil pour laver l'argenterie/le couvert ou des pièces et son procédé WO2010088618A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2749950A CA2749950C (fr) 2009-01-30 2010-02-01 Appareil pour laver l'argenterie/le couvert ou des pieces et son procede
EP10736535.5A EP2391458A4 (fr) 2009-01-30 2010-02-01 Appareil pour laver l'argenterie/le couvert ou des pièces et son procédé
AU2010208022A AU2010208022B2 (en) 2009-01-30 2010-02-01 Silverware/flatware or parts washer apparatus and method thereof
CN2010800061293A CN102300648A (zh) 2009-01-30 2010-02-01 银器、扁平餐具或部件的洗涤装置及其方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14879509P 2009-01-30 2009-01-30
US61/148,795 2009-01-30
US12/697,534 US8882929B2 (en) 2009-01-30 2010-02-01 Silverware/flatware or parts washer apparatus and method thereof
US12/697,534 2010-02-01

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WO2010088618A1 true WO2010088618A1 (fr) 2010-08-05

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US (3) US8882929B2 (fr)
EP (1) EP2391458A4 (fr)
CN (1) CN102300648A (fr)
AU (1) AU2010208022B2 (fr)
CA (1) CA2749950C (fr)
WO (1) WO2010088618A1 (fr)

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EP2596941A1 (fr) * 2011-09-23 2013-05-29 Stratasys, Inc. Système d'élimination de la structure de support
US9714318B2 (en) 2013-07-26 2017-07-25 Stratasys, Inc. Polyglycolic acid support material for additive manufacturing systems
US10059053B2 (en) 2014-11-04 2018-08-28 Stratasys, Inc. Break-away support material for additive manufacturing
US10980393B2 (en) 2009-01-30 2021-04-20 Unified Brands, Inc. Silverware, flatware or parts washer apparatus and method thereof
US20210368832A1 (en) * 2013-07-07 2021-12-02 Unified Brands, Inc. Defrost apparatus and method thereof

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US9750388B2 (en) 2009-04-22 2017-09-05 Unified Brands, Inc. Fluid flow structure and method of use for continuous motion washing machine
US10791749B2 (en) * 2014-11-21 2020-10-06 Tim McDonald Apparatus with multiple nozzles for cleaning crustacea or game
CN106540920A (zh) * 2016-11-26 2017-03-29 南京途酷信息科技有限公司 一种小工件超声波清洗装置
US20230180990A1 (en) 2021-12-13 2023-06-15 Champion Industries, Inc. Soaker sinks and fluid distribution assemblies
CN114887972B (zh) * 2022-05-13 2023-12-19 徐州子天新型建筑材料研究院有限公司 一种呼吸科用辅助器械清洗设备

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US10059053B2 (en) 2014-11-04 2018-08-28 Stratasys, Inc. Break-away support material for additive manufacturing
US11046014B2 (en) 2014-11-04 2021-06-29 Stratasys, Inc. Break-away support material for additive manufacturing

Also Published As

Publication number Publication date
US20180078111A1 (en) 2018-03-22
EP2391458A4 (fr) 2017-10-18
CA2749950A1 (fr) 2010-08-05
AU2010208022B2 (en) 2016-06-23
AU2010208022A1 (en) 2011-07-21
US20100224220A1 (en) 2010-09-09
CN102300648A (zh) 2011-12-28
US9826881B2 (en) 2017-11-28
CA2749950C (fr) 2018-01-09
US8882929B2 (en) 2014-11-11
EP2391458A1 (fr) 2011-12-07
US10980393B2 (en) 2021-04-20
US20150068564A1 (en) 2015-03-12

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